Home / 39,391.22-54,359.42-21,486.38

Finding the Fourth Proportional to 39,391.22, 54,359.42 and 21,486.38

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Solution

The fourth proportional to 39,391.22, 54,359.42 and 21,486.38 is: 29,650.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,391.22 : 54,359.42 = 21,486.38 : x
  2. Step 2: Convert to fraction form
    39,391.22/54,359.42 = 21,486.38/x
  3. Step 3: Cross multiply
    39,391.22x = 54,359.42 × 21,486.38
  4. Step 4: Simplify right side
    39,391.22x = 1,167,986,775.47
  5. Step 5: Solve for x
    x = 1,167,986,775.47/39,391.22
  6. Step 6: Final answer
    x = 29,650.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.